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The Arc Reactor was a power core made out of palladium, and was the initial power source of the first Iron Man Mark suits, and was later modified to an advanced level by Tony to power his suits, as it kept on improving. The second arc reactor is made of an element that Tony Stark created in the second movie.
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This STL file is compatible with most FDM 3D printers (Creality Ender 3, Prusa MK3S+, Bambu Lab, etc.) and resin printers (Elegoo, Anycubic). Check the original page for recommended print settings and materials.
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